Agents app changes broken

[simonw-ikea]

Type: Bug

1. In the Agents App (insiders), create a new LOCAL session on a local repo.
2. Do some changes
3. Open the "Chages" view in the right drawer

No file names are shown in the change, just a plus and minus indicator of changes made. Clicking on the changes shows a modal with the message "The editor could not be opened due to an unexpected error. Please consult the log for more details.

Output log:

2026-05-13 09:04:39.638 [error] [Window] Error: Unable to resolve resource summary://changes
at V9e.doCreateReferencedObject (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1250:28300)
at V9e.doCreateReferencedObject (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1250:28263)
at async nfe.acquire (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:403:3866)
at async U9e.createModelReference (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1250:30165)
at async MC.resolve (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1011:32732)
at async d4.setInput (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1196:95377)
at async jLe.doSetInput (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1784:32850)
at async jLe.doOpenEditor (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1784:30636)
at async jLe.openEditor (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1784:29585)
at async vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1896:31393
2026-05-13 09:04:41.826 [error] [Window] Unable to resolve resource summary://changes: Error: Unable to resolve resource summary://changes
at V9e.doCreateReferencedObject (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1250:28300)
at V9e.doCreateReferencedObject (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1250:28263)
at async nfe.acquire (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:403:3866)
at async U9e.createModelReference (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1250:30165)
at async MC.resolve (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1011:32732)
at async d4.setInput (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1196:95377)
at async jLe.doSetInput (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1784:32850)
at async jLe.doOpenEditor (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1784:30636)
at async jLe.openEditor (vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1784:29585)
at async vscode-file://vscode-app/Applications/Visual%20Studio%20Code%20-%20Insiders.app/Contents/Resources/app/out/vs/sessions/sessions.desktop.main.js:1896:31393

VS Code version: Code - Insiders 1.121.0-insider (Universal) (c305abc, 2026-05-13T04:27:58Z)
OS version: Darwin arm64 25.4.0
Modes:

System Info

Item	Value
CPUs	Apple M3 Pro (12 x 2400)
GPU Status	2d_canvas: enabled GPU0: VENDOR= 0x106b [Google Inc. (Apple)], DEVICE=0x0000 [ANGLE (Apple, ANGLE Metal Renderer: Apple M3 Pro, Version 26.4.1 (Build 25E253))], DRIVER_VENDOR=Apple, DRIVER_VERSION=26.4.1 ACTIVE Machine model name: Mac Machine model version: 15.7 direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: enabled_on trees_in_viz: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	9, 5, 5
Memory (System)	36.00GB (0.34GB free)
Process Argv	--crash-reporter-id 653c733b-3e25-4f4f-b9a1-5e9cd0039e9e
Screen Reader	no
VM	0%

Extensions (2)

Extension	Author (truncated)	Version
vscode-pull-request-github	Git	0.144.0
go	gol	0.52.2

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[simonw-ikea]

Creating a new session in the same repo made it work again, but I guess it's still a bug.